EP 3444872 B1 20210310 - CATHODE CONTAINING SOLID SUPERACID AND LITHIUM-SULFUR SECONDARY BATTERY INCLUDING THE SAME
Title (en)
CATHODE CONTAINING SOLID SUPERACID AND LITHIUM-SULFUR SECONDARY BATTERY INCLUDING THE SAME
Title (de)
KATHODE MIT FESTER SUPERSÄURE UND LITHIUM-SCHWEFEL-SEKUNDÄRBATTERIE DAMIT
Title (fr)
CATHODE CONTENANT UN SUPERACIDE SOLIDE ET BATTERIE SECONDAIRE AU LITHIUM-SOUFRE LA COMPRENANT
Publication
Application
Priority
KR 20170103002 A 20170814
Abstract (en)
[origin: EP3444872A1] The present invention relates to a cathode containing a solid superacid to improve the electrochemical properties and lifetime properties of the cathode using sulfur as an active material, and to a lithium-sulfur secondary battery including the cathode. According to an embodiment, a cathode for a lithium-sulfur secondary battery contains sulfur and a solid superacid. Since the solid superacid in the cathode does not affect the electrochemical properties of the cathode containing sulfur, it is possible to utilize sulfur itself as the cathode active material without technical processing. As a result, it is possible to minimize a reduction in the energy density of the lithium-sulfur secondary battery. In addition, the solid superacid in the cathode can improve the long-term lifetime properties of the lithium-sulfur secondary battery by controlling the polysulfide which is an intermediate product of the charging and discharging reactions of lithium and sulfur.
IPC 8 full level
H01M 4/13 (2010.01); H01M 4/38 (2006.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01)
CPC (source: EP KR US)
H01M 4/13 (2013.01 - EP KR US); H01M 4/131 (2013.01 - US); H01M 4/38 (2013.01 - EP KR US); H01M 4/62 (2013.01 - KR); H01M 10/052 (2013.01 - EP KR US); H01M 4/625 (2013.01 - EP US); H01M 2004/027 (2013.01 - US); H01M 2004/028 (2013.01 - US); Y02E 60/10 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3444872 A1 20190220; EP 3444872 B1 20210310; KR 101999570 B1 20190930; KR 20190018582 A 20190225; US 10700342 B2 20200630; US 2019051886 A1 20190214
DOCDB simple family (application)
EP 18188689 A 20180813; KR 20170103002 A 20170814; US 201816103044 A 20180814